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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 670 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.5/6 − 1/5 =
  2. 2.A bottle has 1/3 litre of juice. Aarav drinks 1/7 litre. How much juice is left (in litres)? =
  3. 3.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  4. 4.3/7 − 1/4 =
  5. 5.A bottle has 7/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  7. 7.Arjun has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  8. 8.3/4 − 2/3 =
  9. 9.2/5 − 3/10 =
  10. 10.3/4 − 2/5 =
  11. 11.7/8 − 1/2 =
  12. 12.A bottle has 9/10 litre of juice. Rohan drinks 2/5 litre. How much juice is left (in litres)? =
  13. 13.6/7 − 1/4 =
  14. 14.A bottle has 5/6 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  15. 15.5/6 − 1/9 =
  16. 16.7/9 − 1/2 =
  17. 17.6/7 − 1/2 =
  18. 18.2/3 − 3/5 =
  19. 19.1/2 − 1/8 =
  20. 20.Sara has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 5/6 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  22. 22.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 7/8 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 5/6 litre of juice. Kabir drinks 7/10 litre. How much juice is left (in litres)? =
  25. 25.1/3 − 2/7 =
  26. 26.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  27. 27.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 5/6 litre of juice. Meera drinks 7/9 litre. How much juice is left (in litres)? =
  29. 29.5/9 − 1/3 =
  30. 30.Kabir has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  31. 31.5/6 − 7/9 =
  32. 32.A bottle has 7/8 litre of juice. Anaya drinks 3/4 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 2/7 =
  34. 34.3/4 − 1/7 =
  35. 35.5/6 − 1/3 =
  36. 36.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 4/5 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.Anaya has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  39. 39.Anaya has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  40. 40.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =

Answer key

  1. 19/30
  2. 4/21
  3. 3/20
  4. 5/28
  5. 11/18
  6. 3/28
  7. 2/15
  8. 1/12
  9. 1/10
  10. 7/20
  11. 3/8
  12. 1/2
  13. 17/28
  14. 1/6
  15. 13/18
  16. 5/18
  17. 5/14
  18. 1/15
  19. 3/8
  20. 4/21
  21. 8/15
  22. 1/28
  23. 1/8
  24. 2/15
  25. 1/21
  26. 4/9
  27. 1/10
  28. 1/18
  29. 2/9
  30. 5/24
  31. 1/18
  32. 1/8
  33. 3/14
  34. 17/28
  35. 1/2
  36. 1/12
  37. 7/15
  38. 7/18
  39. 1/21
  40. 1/5

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids